In this scenario,
Base allocation percentage calculations on
needs to be set to
Remainder of distribution
. This is because it's possible that more than 50% of the total distribution is left after the fixed $100 dollars is allocated. So, if the net pay was $1,000, then $900 remains after the $100 fixed amount. Because
Remainder of distribution
is marked, the application allocates $450 (half of what's left). If the
Total distribution
checkbox is marked, then $500 is allocated to the second savings account.